Home / 20,617.48-28,452.18-11,186.02

Finding the Fourth Proportional to 20,617.48, 28,452.18 and 11,186.02

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Solution

The fourth proportional to 20,617.48, 28,452.18 and 11,186.02 is: 15,436.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,617.48 : 28,452.18 = 11,186.02 : x
  2. Step 2: Convert to fraction form
    20,617.48/28,452.18 = 11,186.02/x
  3. Step 3: Cross multiply
    20,617.48x = 28,452.18 × 11,186.02
  4. Step 4: Simplify right side
    20,617.48x = 318,266,654.52
  5. Step 5: Solve for x
    x = 318,266,654.52/20,617.48
  6. Step 6: Final answer
    x = 15,436.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.